Here is a good new article on Waterproofing barrier free showers. I wish Schluter would at least show a few showers built with cement board and Kerdi and skip all the drywall jobs with their product. That said the install is within their specifications (all be it not acceptable in my town of Vancouver) and an amazing showcase of tiling skill. This Hugo Sanchez guy is the real deal. I have been following him for years now and the guy is a rock star.
Check out the article.
Notice the void at the bottom of the wall prep. We do a similar approach and this simple step helps take any build up out of the equation. An ounce of forethought can equate to bags of setting materials saved!
The article was writtin by Dale Kempster from Schluter and Dle is the top dog (Tech Man) Schluter has in North America.
I should post the pictures of how we use Kerdi to make a pressure fitting flange around the 3" ABS toilet waste pipe. This allowed us to flood test our last Kerdi Drain install completely. Made a dam at the door way.